20212131113220 has 96 divisors (see below), whose sum is σ = 59574373447680. Its totient is φ = 5106070327680.

The previous prime is 20212131113173. The next prime is 20212131113287. The reversal of 20212131113220 is 2231113121202.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40774255 + ... + 41266985.

It is an arithmetic number, because the mean of its divisors is an integer number (620566390080).

Almost surely, 2^{20212131113220} is an apocalyptic number.

20212131113220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20212131113220 is an abundant number, since it is smaller than the sum of its proper divisors (39362242334460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20212131113220 is a wasteful number, since it uses less digits than its factorization.

20212131113220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528745 (or 528743 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 20212131113220 its reverse (2231113121202), we get a palindrome (22443244234422).

The spelling of 20212131113220 in words is "twenty trillion, two hundred twelve billion, one hundred thirty-one million, one hundred thirteen thousand, two hundred twenty".